The spaceship makes 4 revolutions around the Earth in 6 hours. The ship flew about Earth of 15 times. What is the time the ship moved

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The ship makes 1 revolution around the Earth in 1.5 hours (6:4) If it flew about the earth of 15 times that is necessary if - in turns to increase (15x1.5=22.5) Answer by time: The ship flew about the earth of 15 times in 22.5 hours
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Answer add